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Nov. 6 1923. 1,473,560

c. w. JOHNSON S OUND CLAR I FI ER Filed June 15. 1922 WITNESSES nvvmro/a fi 5U M Carrel inn/Tammy Patented Nov. 6, 1923.

UNITED STATES CORBEL W. JOHNSON, OF NEW YORK, N. Y.

SOUND CLARIFIER,

Application filed June 15, 1922. Serial No, 588,587.

To all whom it may concern:

Be it known that 1. Conan W. Jonnson,

a citizen of the United States, and resident of the city of New York, borough of Manhattan, county of New York, and State of New York, have invented a new and Imroved Sound Clarifier, of which the follbwing is a full, clear, and exact description.

My invention relates to a sound clarifier, and aims to provide a device of this nature presenting certain improved construction over my previous app ication, Patent No. 1447855, dated March 6, 1923, entitled Sound clarifier, as well as my previous Patent #1240050 issued September 11, 1917, also application Serial No. 568586, filed June 15, 1922, entitled Sound amplifier.

It is an object of the present invention to provide a sound clarifier, particularlyintended for projection of sound waves, such as occurs in connection with talking machines, although my invention is not necessarily limited to this particular association.

The resent invention further contemplates t e provision of a. sound clarifier which will embody extremely simple construction, and present a body which will insure a circulation of air in such a manner as to induce a clarification of the sounds and to revent muilling of the same.

A still further object of this invention is that of constructing a device oi-the character stated which will serve to merge all sound waves passing through the same into each other, and which will further prevent the formation of echos, nasal or inharmonious sounds, and in which the tone will be amplified and clarified to thus produce the best possible results.

With these and further objects in mind the resent invention embraces a sound clari er comprising a body in which arts movable with respect to, each other, W1 1 be eliminated, and in which any abrupt surfaces will be eliminated, together with means within the body for achieving the objects set forth in the last paragraph.

Reference is had to the attached sheet of drawings in which a practical embodiment of my invention has been shown and in which it will be seen that I have shown my clarifierassociated with stalking machine.

Fi e 1 is a sectional side view of a. conventional talking machine and showin my imsfoved type of clnrifier associated t erewi and Figure 2 is a sectional plan view taken along the line 2-2 and in the direction of the arrows indicated in Figure 1.

It will be seen in these views that the reference numeral 5 indicates the lid of a talking machine, and 6 the cabinet, which in the usual manner has been provided with a turn table 7 with which n reproducer 8 to operates, the latter being in turn connected to'a tone arm 9 which is supported in such a manner as to throw the sound waves pass ing through its body, into my improved type of clarifier.

Now with respect to the sound clarifier, it willbe noted that the/essence of my invention consists in the provision of a device of this nature which will present u body having a passage which includes no abrupt turns or angles. Thus the reference numeral 10 identifies the intake end of the clarifier, and 11 the outlet end thereof, the body of the clarifier tapering throughout its en- .tire'length, and presentin a wall 12 formed with a passae 13. This passage, as has been clearly s own in Figure 2 presents a fiarin mouth or inlet 14 which, due to its disposition in the body of the clarifier, will serve to divert a portion of the sound waves into the passa e 13.

More particdlarly it will be noted that the mouth 14 pi the passage 13 takes on a para bolic formation at its inset with the thicker wall 12, and beginning at its greater cross section it points adjacent the side walls of the sound conveyor, becomes a converging oblique depression carrying a concave formation to its outlet, the ed es of the concave depression being rounded to provide a smooth passage for the air motions conveying t e sound waves in their pro essive course through said sound conveyor, t rough said auxiliary opening, it bein noted that the letter is in connection wit a tube or horn suspended within said clarifier and ad'acent the outer end of the same.

ith res ct to the tube or horn aforementioned it will be noted that the same includes a body 15 which is preferably polygonal and flared towards the outer out 11 of the clarifier. Ad'acent the base of the bod I provide a we 16 disposed at an ang e which will insure an even and desirable flow of the sound waves. A tube 17 has its outer end in communication with an opening in the body 15 at u. oint adjacent the inner end of the said well 16 and the inner end of this tube is suitebly'connected to the thickened-wall 12 of the clerifienend 'at a point ad'acent to the outlet end of the passage 18 it eing noted that the horn 15 receives its only support from the tube 17 which in turn is supported by the thickened wall 12.

It will also be noted that the inner surface of the thicker wall takes e-horizontal' course and has an elliptical protuberance 18 adjacent its outletand by'means' of this construction a; sullicient body is provided at this point to permit oft-lie attachment of the inner end ofthe tube 17 which surrounds the outlet of the auxiliary opening or :passage 13. It is further to be noted that the thicker 'wa-ll thereafter terminates in an inclined plane as at. 19 to meet. with or merge into the wall of the amplifying chamber ofthe clarifiel' to thus. avoid creating a pocket in the soundwaves during the course of their propagation.

It will be understood that by econstruo tion' of this nature the'objects of this invention are accomplished and furtherincident to the ror-i'sion ofthe horn body or, tube 15 within the c-lai'ifie'n' and due to the relative size-of these element-stile former will be more in-sympathy with certain sound waves thsnt-lie hitterto thus more clearly re roduce the sound wavesf hus it will be seen that all the results at tributed to this invention are accomplished and it will be appreciated that numerous modifications of structure might readily be resorted to without in the least departing from tbesco e of my'cla'ims; which ere:

1.' A soun 'clerifier-iucludihg-a body haw ing a bore, a thickened wall forming a part of said body and being pro ided with a passa e, and a tube connected to said passage a poem its outer end.

2. A sound claiifier including a body havrn :a'ln'ain bore, 11 essage formed in said b0 portion, the b y ortion'formed with this ened walls near t e forward end of said passage, and a tube connected to the body portion at the outer end of said passagle, said passage having a flaring inner cn 3. A sound clirri-fier including a body formed with shore, a tube connected to the outer end of said bore to provide it continuetion thereof, a born connected to the outer end of said tube,- and :L wall within said horn arranged at an angle to the direction of the passage within the tube at. the point of connection to said born.

4. A. sound clalrifier including a body formed with a} bore, a thickened wall forming a part of said body and being provided with a passage, u, tube connected to the outer end of-slridpassage and a ortion of said thickened well being exten ed beyond the point of connection of said tube with said Pa g 5. A sound clarifier including a body formed with a bore, the forward lower end of said body being thickened and provided with a passage along said thickened portion, a tubeiconnected to the end of said thickened portion to ferm a, continuation of said pas sagdnnd-e horn connected to the outer end of-saidtube and-lsiterall? su ported thereby.

' OORREE JOHNSON. 

